For a nice modern shape of a tail, the shape and form, not about the design, see -
http://www.newairplane.com/787/whos_flying/#/AINThe shape of the particular aircraft we are flying, see -
http://www.newairplane.com/777/whosFlying/#/AAL#357 is a great shape but tending a bit retro and looks more like a wing than a tail.
If, if this concept is to be followed ?, it has very strong competition from concepts #306 and #346.